How to receive a real number input from a text box?

[etow]

Hi

How do you convert a string input from a edit text box for a visual windows Easy Code project into a real or floating point number and using the FpuAtoFL function?

Thanks

[Ramon Sala]

Egan,

In the PrimeFactor program I made for you there is the answer to your question. Get the text for the Edit control (by calling the GetWindowText API call or the GetText Easy Code method) and then convert it to a numerical value (by calling the Value Easy Code method).

Ramon

[etow]

Thanks

Ramon

[etow]

Hi Ramon,

I have trouble with my parts of my code:

Here is my code:

Code Select Expand


    ;Get the handle to Solve button in Eax
    Invoke GetWindowItem, hWnd, IDC_QUADRATICSOLUTIONS_GETA
    ;Save it in Edx
    Mov Edx, Eax
    ;Get the text in the Edit control
    Invoke GetWindowText, Edx, Addr szNumber1, 24
    ;Convert it to a number returned in Eax
    Invoke Value, Addr szNumber1
    Mov NumberA, Eax


The error is "error A2070: invalid instruction operands"

What is the correct operands?

[etow]

Hi Ramon,

I am using FPU functions to calculate real numbers.

[etow]

Hi Ramon,

I am using Real10 variables to store my real or floating point numbers

[etow]

I have trouble with the following code below:

It gives me Access Violation Read at "Invoke String, szNumber1, Eax, ecDecimal"

Please help.

Thanks

Code Select Expand


printQuadraticFormat Proc Private hWnd:HWND
  Local szNumber1[100]:CHAR
  Local szNumber2[100]:CHAR
  Local szNumber3[100]:CHAR
  Local szRootX0[100]:CHAR
  Local szRootX1[100]:CHAR

  ;Get the handle to Results Static control in Eax
  Invoke GetWindowItem, hWnd, IDC_QUADRATICSOLUTIONS_RESULTS

  ;Save it in Edi
  Mov Edi, Eax

  ;Clear the Results control
  Invoke SetWindowText, Edi, NULL

  ;Clear szbuffer
  Mov szBuffer[0], 0

      Invoke GetWindowText, Edi, Addr szBuffer, 255
  Invoke SetWindowText, Edi, Addr szBuffer

      ;Get the address of last character of szBuffer
      Invoke lstrlen, Addr szBuffer
      Add Eax, Offset szBuffer

  ;Adds a carriage return/line feed to szBuffer
      Invoke lstrcat, Addr szBuffer, Addr szCRLF

;      print chr$(13, 10)
      Invoke lstrcat, Addr szBuffer, TextAddr("The quadratic equation : ")
;      print chr$("  Solutions for quadratic equation : ", 13, 10)
      Invoke lstrcat, Addr szBuffer, TextAddr("---------------------------")
;      print chr$("--------------------------------------", 13, 10)
      Invoke lstrcat, Addr szBuffer, TextAddr(" ")
;      print chr$(" ")
      Invoke FpuFLtoA, Addr NumberA, 4, Addr szNumber1, SRC1_REAL
;      print ext$ (NumberA, 0, 4) ; display the X^2 coefficient of
                                                ; quadratic equation
                                                ; to 4 decimal places
       ;Get the address of last character of szBuffer
       Invoke lstrlen, Addr szBuffer
       Add Eax, Offset szBuffer
   ;Convert the Esi value to a decimal
   ;string and adds it to szBuffer
       Invoke String, szNumber1, Eax, ecDecimal

      Invoke lstrcat, Addr szBuffer, TextAddr(" X^2 ")
;      print chr$(" X^2 ")
                     ;
      Invoke FpuComp, Addr NumberB, Offset Number0, SRC1_REAL Or SRC2_REAL
      Shr Al, 1           ; mov bit 0 to Carry Flag , NumberB = 0
      Jc NumberBIs0       ; jump on Carry Flag

      Invoke lstrcat, Addr szBuffer, TextAddr(" + ")
;      print chr$(" + ")
      Invoke FpuFLtoA, Addr NumberB, 4, Addr szNumber2, SRC1_REAL
;      print ext$ (NumberB, 0, 4) ; display the X coefficient of
                                                ; quadratic equation
                                                ; to 4 decimal places
       ;Get the address of last character of szBuffer
       Invoke lstrlen, Addr szBuffer
       Add Eax, Offset szBuffer
   ;Convert the Esi value to a decimal
   ;string and adds it to szBuffer
       Invoke String, szNumber2, Eax, ecDecimal
                                               
      Invoke lstrcat, Addr szBuffer, TextAddr(" X ")
;      print chr$(" X ")
      Jmp NextC   ; just jump
                     ;
NumberBIs0:
NextC:
                     ;
       Invoke FpuComp, Addr NumberC, Offset Number0, SRC1_REAL Or SRC2_REAL
       Shr Al, 1              ; mov bit 0 to Carry Flag , NumberC = 0
       Jc NumberCIs0          ; jump on Carry Flag
      Invoke lstrcat, Addr szBuffer, TextAddr(" + ")
;       print chr$(" + ")
      Invoke FpuFLtoA, Addr NumberC, 4, Addr szNumber3, SRC1_REAL
;       print ext$ (NumberC, 0, 4) ; display the constant of
                                                ; quadratic equation
       ;Get the address of last character of szBuffer
       Invoke lstrlen, Addr szBuffer
       Add Eax, Offset szBuffer
   ;Convert the Esi value to a decimal
   ;string and adds it to szBuffer
       Invoke String, szNumber3, Eax, ecDecimal
                                                ; to 4 decimal places
       Jmp EndPrint  ; just jump

NumberCIs0:
EndPrint:
      Invoke lstrcat, Addr szBuffer, TextAddr(" = 0 ")
      Invoke lstrcat, Addr szBuffer, Addr szCRLF
      Invoke lstrcat, Addr szBuffer, Addr szCRLF
;       print chr$ (" = 0 ", 13, 10)

;       print chr$(13, 10, 13, 10) ; two carriage return line feeds will be
                                 ; outputted to the screen
      Invoke lstrcat, Addr szBuffer, TextAddr(" X = ")
;       print chr$(" X = ")
      Invoke FpuFLtoA, Addr _RootX0, 15, Addr szRootX0, SRC1_REAL
;       print real10$ (_RootX0)   ; print the real number of one real root
                                ; in the quadratic formula
       ;Get the address of last character of szBuffer
       Invoke lstrlen, Addr szBuffer
       Add Eax, Offset szBuffer
   ;Convert the Esi value to a decimal
   ;string and adds it to szBuffer
       Invoke String, szRootX0, Eax, ecDecimal

      Invoke lstrcat, Addr szBuffer, Addr szCRLF
;       print chr$(13, 10)
      Invoke lstrcat, Addr szBuffer, TextAddr("  1 ")
;       print chr$("  1 ", 13, 10, 13, 10)

      Invoke lstrcat, Addr szBuffer, TextAddr(" X = ")
;       print chr$(" X = ")
      Invoke FpuFLtoA, Addr _RootX1, 15, Addr szRootX1, SRC1_REAL
;       print real10$ (_RootX1)   ; print the real number of another real root
                                ; in the quadratic formula
       ;Get the address of last character of szBuffer
       Invoke lstrlen, Addr szBuffer
       Add Eax, Offset szBuffer
   ;Convert the Esi value to a decimal
   ;string and adds it to szBuffer
       Invoke String, szRootX1, Eax, ecDecimal
                               
      Invoke lstrcat, Addr szBuffer, Addr szCRLF
;       print chr$(13, 10)
      Invoke lstrcat, Addr szBuffer, TextAddr("  2 ")
;       print chr$("  2 ", 13, 10)
;       print chr$(13, 10)

       Ret
printQuadraticFormat EndP


[Ramon Sala]

Egan,

Invoke String, szNumber1, Eax, ecDecimal


The problem is in the szNumber1 variable. You have to pass the effective addres, using the Addr directive, like this:


Invoke String, Addr szNumber1, Eax, ecDecimal.

[etow]

Hi
Can you check the following code?
I get Access Violation Read
Exception Address: 40BF55H
--------------------------------------------------------------------------------------------------------------

Code Select Expand


SolveQuadraticEquation Proc Private hWnd:HWND, uMsg:ULONG, wParam:WPARAM, lParam:LPARAM
  Local szNumber1[100]:CHAR
  Local szNumber2[100]:CHAR
  Local szNumber3[100]:CHAR

    ;Get the handle to Solve button in Eax
    Invoke GetWindowItem, hWnd, IDC_QUADRATICSOLUTIONS_GETA
    ;Save it in Edx
    Mov Edx, Eax
    ;Get the text in the Edit control
    Invoke GetWindowText, Edx, Addr szNumber1, 24
    ;Convert it to a number returned in Eax
    Invoke Value, Addr szNumber1
    Invoke FpuAtoFL, Eax, Addr NumberA, DEST_FPU

    ;Get the handle to Solve button in Eax
    Invoke GetWindowItem, hWnd, IDC_QUADRATICSOLUTIONS_GETB
    ;Save it in Edx
    Mov Ebx, Eax
    ;Get the text in the Edit control
    Invoke GetWindowText, Ebx, Addr szNumber2, 24
    ;Convert it to a number returned in Eax
    Invoke Value, Addr szNumber2
    Invoke FpuAtoFL, Eax, Addr NumberB, DEST_FPU

    ;Get the handle to Solve button in Eax
    Invoke GetWindowItem, hWnd, IDC_QUADRATICSOLUTIONS_GETC
    ;Save it in Edx
    Mov Ecx, Eax
    ;Get the text in the Edit control
    Invoke GetWindowText, Ecx, Addr szNumber3, 24
    ;Convert it to a number returned in Eax
    Invoke Value, Addr szNumber3
    Invoke FpuAtoFL, Eax, Addr NumberC, DEST_FPU

    Invoke  FpuComp, Addr NumberA, Offset Number0, SRC1_REAL Or SRC2_REAL
    Or Eax, Eax     ; activate zero flag
    Jz ErrorInComp   ; jump if zero
    ; ------------------------------------
    ; If bit 0 of EAX=1 => NumberA=Number0
    ; ------------------------------------
    Shr Al, 1             ; mov bit 0 to Carry Flag , NumberA = 0
    Jc Linear             ; jump on Carry Flag
    ;
    Invoke calculateXRoots, Addr NumberA, Addr NumberB, Addr NumberC
    Invoke printQuadraticFormat, HWnd
    print chr$(13, 10)
    Jmp Finish

ErrorInComp:
;   print chr$(13, 10)
;   print chr$(" Error comparing Number A against zero! ", 13, 10, 13, 10)
    Invoke MessageBox, hWnd, TextAddr("Error comparing Number A against zero!"), TextAddr("Quadratic Solutions"), MB_ICONEXCLAMATION Or MB_OK
    Jmp Finish

Linear:
    Invoke FpuComp, Addr NumberB, Offset Number0, SRC1_REAL Or SRC2_REAL
    Or Eax, Eax   ; activates zero flag
    Jz ZeroErrors  ; jump if zero
    ; ------------------------------------
    ; If bit 0 of EAX=1 => NumberB=Number0
    ; ------------------------------------
    Shr Al, 1        ; mov bit 0 to Carry Flag , NumberB = 0
    Jc ZeroErrors
    Invoke calculateLinearRoot, Addr NumberB, Addr NumberC
    Invoke printLinearFormat, HWnd
    Jmp Finish

ZeroErrors:
;    print chr$(13, 10)
;    print chr$(" Error, Numbers for A and B are zero! ", 13, 10, 13, 10)
    Invoke MessageBox, hWnd, TextAddr("Error, Numbers for A and B are zero!"), TextAddr("Quadratic Solutions"), MB_ICONEXCLAMATION Or MB_OK

Finish:

Ret
SolveQuadraticEquation EndP


[etow]

hi

I want to make sure if my procedures are correct below in my following code below:

Code Select Expand


;The MASM32 Runtime Library include file.
;<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Include   \masm32\include\masm32rt.inc
;<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Include   \masm32\fpulib\fpu.inc
IncludeLib   \masm32\fpulib\fpu.lib
;<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Include MyMacros.inc
;<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

.Const
IDC_EDIT        Equ 3000
IDC_BUTTON      Equ 3001
IDC_EXIT        Equ 3002
IDM_GETTEXT     Equ 32000
IDM_CLEAR       Equ 32001
IDM_EXIT        Equ 32002

.Data?
szBuffer Byte 512 Dup(?)

.Data
szCRLF Byte 13, 10, 0

Number0         Real10  0.0   ; used to determine if there are real roots in the
                              ; quadratic formula
Number2         Real10  2.0   ; number to use to get the denominator in the quadratic
                              ; formula
Number4         Real10  4.0   ; number to get part of the square root number
Minus1          Real10 - 1.0   ; used for negation
; ««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««««
NumberA         Real10  ?     ; the coefficient of X^2 in the quadratic equation
NumberB         Real10  ?     ; the coefficient of X in the quadratic equation
NumberC         Real10  ?     ; the constant in the quadratic equation
;------------------------------------
_RootX0         Real10 ?      ; first real root solution to the quadratic formula
_RootX1         Real10 ?      ; second real root solution to the quadratic formula
_LinearRootX    Real10 ?      ; real linear root solution to the linear equation
; ##############################################################################################

.Code

QuadraticSolutionsProcedure Proc Private hWnd:HWND, uMsg:ULONG, wParam:WPARAM, lParam:LPARAM
.If uMsg == WM_CREATE

Return TRUE
.ElseIf uMsg == WM_COMMAND
LoWord wParam ;Get the low word of wParam
.If Ax == IDC_QUADRATICSOLUTIONS_SOLVEBUTTON
HiWord wParam ;Get the high word of wParam
.If Ax == BN_CLICKED
;Solve button has been clicked
                Invoke SolveQuadraticEquation, hWnd, uMsg, wParam, lParam
Return TRUE
.EndIf
.ElseIf Ax == IDC_QUADRATICSOLUTIONS_CLEARBUTTON
HiWord wParam ;Get the high word of wParam
.If Ax == BN_CLICKED
;Clear button has been clicked

;Get the handle for the Edit control
Invoke GetWindowItem, hWnd, IDC_QUADRATICSOLUTIONS_GETA
;Set Edit control to no text
Invoke SetWindowText, Eax, NULL

                ;Get the handle for the Edit control
Invoke GetWindowItem, hWnd, IDC_QUADRATICSOLUTIONS_GETB
;Set Edit control to no text
Invoke SetWindowText, Eax, NULL

                ;Get the handle for the Edit control
Invoke GetWindowItem, hWnd, IDC_QUADRATICSOLUTIONS_GETC
;Set Edit control to no text
Invoke SetWindowText, Eax, NULL

;Get the handle for the Results static control
Invoke GetWindowItem, hWnd, IDC_QUADRATICSOLUTIONS_RESULTS
;Set the Results static control to no text
Invoke SetWindowText, Eax, NULL

Return TRUE
.EndIf
.ElseIf Ax == IDC_QUADRATICSOLUTIONS_EXITBUTTON
HiWord wParam ;Get the high word of wParam
.If Ax == BN_CLICKED
;Exit button has been clicked
Invoke SendMessage, hWnd, WM_CLOSE, 0, 0
Return TRUE
.EndIf
.EndIf
.ElseIf uMsg == WM_CLOSE
Invoke IsModal, hWnd
.If Eax
Invoke EndModal, hWnd, IDCANCEL
Return TRUE
.EndIf
.EndIf
Return FALSE
QuadraticSolutionsProcedure EndP
;<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
;<<  SolveQuadraticEquation procedure will solve a quadratic equation by getting  <<
;<<  two solutions using the quadratic forumla.                                   <<
;<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

SolveQuadraticEquation Proc Private hWnd:HWND, uMsg:ULONG, wParam:WPARAM, lParam:LPARAM
  Local szNumber1[100]:CHAR
  Local szNumber2[100]:CHAR
  Local szNumber3[100]:CHAR

    ;Get the handle to Solve button in Eax
    Invoke GetWindowItem, hWnd, IDC_QUADRATICSOLUTIONS_GETA
    ;Save it in Edx
    Mov Edx, Eax
    ;Get the text in the Edit control
    Invoke GetWindowText, Edx, Addr szNumber1, 24
    ;Convert it to a number returned in Eax
    Invoke Value, Addr szNumber1
    Invoke FpuAtoFL, Eax, Addr NumberA, DEST_FPU

    ;Get the handle to Solve button in Eax
    Invoke GetWindowItem, hWnd, IDC_QUADRATICSOLUTIONS_GETB
    ;Save it in Edx
    Mov Ebx, Eax
    ;Get the text in the Edit control
    Invoke GetWindowText, Ebx, Addr szNumber2, 24
    ;Convert it to a number returned in Eax
    Invoke Value, Addr szNumber2
    Invoke FpuAtoFL, Eax, Addr NumberB, DEST_FPU

    ;Get the handle to Solve button in Eax
    Invoke GetWindowItem, hWnd, IDC_QUADRATICSOLUTIONS_GETC
    ;Save it in Edx
    Mov Ecx, Eax
    ;Get the text in the Edit control
    Invoke GetWindowText, Ecx, Addr szNumber3, 24
    ;Convert it to a number returned in Eax
    Invoke Value, Addr szNumber3
    Invoke FpuAtoFL, Eax, Addr NumberC, DEST_FPU

    Invoke  FpuComp, Addr NumberA, Offset Number0, SRC1_REAL Or SRC2_REAL
    Or Eax, Eax     ; activate zero flag
    Jz ErrorInComp   ; jump if zero
    ; ------------------------------------
    ; If bit 0 of EAX=1 => NumberA=Number0
    ; ------------------------------------
    Shr Al, 1             ; mov bit 0 to Carry Flag , NumberA = 0
    Jc Linear             ; jump on Carry Flag
    ;
    Invoke calculateXRoots, Addr NumberA, Addr NumberB, Addr NumberC
    Jc _ExitProc ; jump on Carry Flag

    Cmp Eax, 2  ; compare Eax with 2 , complex roots results
    Je @F  ; jump if equal to 2 forward to @@
    Invoke printTheXRoots, hWnd
;    print chr$(13, 10)
    Jmp Finish

@@:
    ;print chr$(13, 10)
    Invoke lstrcat, Addr szBuffer, TextAddr("There are no real solutions for the quadratic equation : ")
;   print chr$("  Solutions for quadratic equation : ", 13, 10)
    Invoke lstrcat, Addr szBuffer, TextAddr("---------------------------------------------------------")
    ;print chr$(" There are no real solutions for the quadratic equation: ", 13, 10)
    ;print chr$("----------------------------------------------------------", 13, 10)
    Invoke printQuadraticFormat, hWnd
    Invoke lstrcat, Addr szBuffer, TextAddr("This equation has complex roots!")
;   print chr$(13, 10, " This equation has complex roots! ")
;   print chr$(13, 10, 13, 10) ; two carriage return line feeds to the screen
    Jmp Finish                 ; exit here

ErrorInComp:
;   print chr$(13, 10)
;   print chr$(" Error comparing Number A against zero! ", 13, 10, 13, 10)
    Invoke MessageBox, hWnd, TextAddr("Error comparing Number A against zero!"), TextAddr("Quadratic Solutions"), MB_ICONEXCLAMATION Or MB_OK
    Jmp Finish

Linear:
    Invoke FpuComp, Addr NumberB, Offset Number0, SRC1_REAL Or SRC2_REAL
    Or Eax, Eax   ; activates zero flag
    Jz ZeroErrors  ; jump if zero
    ; ------------------------------------
    ; If bit 0 of EAX=1 => NumberB=Number0
    ; ------------------------------------
    Shr Al, 1        ; mov bit 0 to Carry Flag , NumberB = 0
    Jc ZeroErrors
    Invoke calculateLinearRoot, Addr NumberB, Addr NumberC
    Invoke printLinearFormat, hWnd
    Jmp Finish

ZeroErrors:
;    print chr$(13, 10)
;    print chr$(" Error, Numbers for A and B are zero! ", 13, 10, 13, 10)
    Invoke MessageBox, hWnd, TextAddr("Error, Numbers for A and B are zero!"), TextAddr("Quadratic Solutions"), MB_ICONEXCLAMATION Or MB_OK
    Jmp Finish

_ExitProc:
    ;  print chr$(13, 10)
    Invoke MessageBox, hWnd, TextAddr("An Error occurred while calculating the roots!"), TextAddr("Quadratic Solutions"), MB_ICONEXCLAMATION Or MB_OK
    ;print chr$(" An Error occured while calculating the roots", 13, 10)

Finish:

Ret
SolveQuadraticEquation EndP
;<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
;<<  printQuadraticFormat procedure will output the quadratic equation with  <<
;<<  the three numbers that the user entered.                                <<
;<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

printQuadraticFormat Proc Private hWnd:HWND
  Local szNumber1[100]:CHAR
  Local szNumber2[100]:CHAR
  Local szNumber3[100]:CHAR
  Local szRootX0[100]:CHAR
  Local szRootX1[100]:CHAR

  ;Get the handle to Results Static control in Eax
  Invoke GetWindowItem, hWnd, IDC_QUADRATICSOLUTIONS_RESULTS

  ;Save it in Edi
  Mov Edi, Eax

  ;Clear the Results control
  Invoke SetWindowText, Edi, NULL

  ;Clear szbuffer
  Mov szBuffer[0], 0

      Invoke GetWindowText, Edi, Addr szBuffer, 255
  Invoke SetWindowText, Edi, Addr szBuffer

      ;Get the address of last character of szBuffer
      Invoke lstrlen, Addr szBuffer
      Add Eax, Offset szBuffer

  ;Adds a carriage return/line feed to szBuffer
      Invoke lstrcat, Addr szBuffer, Addr szCRLF

;      print chr$(13, 10)
      Invoke lstrcat, Addr szBuffer, TextAddr("The quadratic equation : ")
;      print chr$("  Solutions for quadratic equation : ", 13, 10)
      Invoke lstrcat, Addr szBuffer, TextAddr("---------------------------")
;      print chr$("--------------------------------------", 13, 10)
      Invoke lstrcat, Addr szBuffer, TextAddr(" ")
;      print chr$(" ")
      Invoke FpuFLtoA, Addr NumberA, 4, Addr szNumber1, SRC1_REAL
;      print ext$ (NumberA, 0, 4) ; display the X^2 coefficient of
                                                ; quadratic equation
                                                ; to 4 decimal places
       ;Get the address of last character of szBuffer
       Invoke lstrlen, Addr szBuffer
       Add Eax, Offset szBuffer
   ;Convert the Esi value to a decimal
   ;string and adds it to szBuffer
       Invoke String, Addr szNumber1, Eax, ecDecimal

      Invoke lstrcat, Addr szBuffer, TextAddr(" X^2 ")
;      print chr$(" X^2 ")
                     ;
      Invoke FpuComp, Addr NumberB, Offset Number0, SRC1_REAL Or SRC2_REAL
      Shr Al, 1           ; mov bit 0 to Carry Flag , NumberB = 0
      Jc NumberBIs0       ; jump on Carry Flag

      Invoke lstrcat, Addr szBuffer, TextAddr(" + ")
;      print chr$(" + ")
      Invoke FpuFLtoA, Addr NumberB, 4, Addr szNumber2, SRC1_REAL
;      print ext$ (NumberB, 0, 4) ; display the X coefficient of
                                                ; quadratic equation
                                                ; to 4 decimal places
       ;Get the address of last character of szBuffer
       Invoke lstrlen, Addr szBuffer
       Add Eax, Offset szBuffer
   ;Convert the Esi value to a decimal
   ;string and adds it to szBuffer
       Invoke String, Addr szNumber2, Eax, ecDecimal
                                               
      Invoke lstrcat, Addr szBuffer, TextAddr(" X ")
;      print chr$(" X ")
      Jmp NextC   ; just jump
                     ;
NumberBIs0:
NextC:
                     ;
       Invoke FpuComp, Addr NumberC, Offset Number0, SRC1_REAL Or SRC2_REAL
       Shr Al, 1              ; mov bit 0 to Carry Flag , NumberC = 0
       Jc NumberCIs0          ; jump on Carry Flag
       Invoke lstrcat, Addr szBuffer, TextAddr(" + ")
;       print chr$(" + ")
       Invoke FpuFLtoA, Addr NumberC, 4, Addr szNumber3, SRC1_REAL
;       print ext$ (NumberC, 0, 4) ; display the constant of
                                                ; quadratic equation
       ;Get the address of last character of szBuffer
       Invoke lstrlen, Addr szBuffer
       Add Eax, Offset szBuffer
   ;Convert the Esi value to a decimal
   ;string and adds it to szBuffer
       Invoke String, Addr szNumber3, Eax, ecDecimal
                                                ; to 4 decimal places
       Jmp EndPrint  ; just jump

NumberCIs0:
EndPrint:
       Invoke lstrcat, Addr szBuffer, TextAddr(" = 0 ")
       Invoke lstrcat, Addr szBuffer, Addr szCRLF
       Invoke lstrcat, Addr szBuffer, Addr szCRLF
;       print chr$ (" = 0 ", 13, 10)

;       print chr$(13, 10, 13, 10) ; two carriage return line feeds will be
                                 ; outputted to the screen

printQuadraticFormat EndP
;<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
;<<  printTheXRoots outputs the real roots of the quadratic equation.  <<
;<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

printTheXRoots Proc Private, hWnd:HWND
Local szRootX0[100]:CHAR
Local szRootX1[100]:CHAR

;      print chr$(13, 10)
      Invoke lstrcat, Addr szBuffer, TextAddr(" Solutions for quadratic equation :")
      Invoke lstrcat, Addr szBuffer, TextAddr(" ----------------------------------")

;      print chr$("  Solutions for quadratic equation : ", 13, 10)
;      print chr$("--------------------------------------", 13, 10)

      Invoke printQuadraticFormat, hWnd

      Invoke lstrcat, Addr szBuffer, TextAddr(" X = ")
;       print chr$(" X = ")
      Invoke FpuFLtoA, Addr _RootX0, 15, Addr szRootX0, SRC1_REAL
;       print real10$ (_RootX0)   ; print the real number of one real root
                                ; in the quadratic formula
      ;Get the address of last character of szBuffer
      Invoke lstrlen, Addr szBuffer
      Add Eax, Offset szBuffer
  ;Convert the Esi value to a decimal
  ;string and adds it to szBuffer
      Invoke String, Addr szRootX0, Eax, ecDecimal

      Invoke lstrcat, Addr szBuffer, Addr szCRLF
;       print chr$(13, 10)
      Invoke lstrcat, Addr szBuffer, TextAddr("  1 ")
;       print chr$("  1 ", 13, 10, 13, 10)

      Invoke lstrcat, Addr szBuffer, TextAddr(" X = ")
;       print chr$(" X = ")
      Invoke FpuFLtoA, Addr _RootX1, 15, Addr szRootX1, SRC1_REAL
;       print real10$ (_RootX1)   ; print the real number of another real root
                                ; in the quadratic formula
      ;Get the address of last character of szBuffer
      Invoke lstrlen, Addr szBuffer
      Add Eax, Offset szBuffer
  ;Convert the Esi value to a decimal
  ;string and adds it to szBuffer
      Invoke String, Addr szRootX1, Eax, ecDecimal
                               
      Invoke lstrcat, Addr szBuffer, Addr szCRLF
;       print chr$(13, 10)
      Invoke lstrcat, Addr szBuffer, TextAddr("  2 ")
;       print chr$("  2 ", 13, 10)
;       print chr$(13, 10)
      Invoke lstrcat, Addr szBuffer, Addr szCRLF
      Invoke lstrcat, Addr szBuffer, Addr szCRLF
Ret
printTheXRoots EndP
;<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
;<<  printLinearFormat will output the format of the linear equation   <<
;<<  with the two user numbers.                                        <<
;<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

printLinearFormat Proc Private hWnd:HWND
  Local szNumber1[100]:CHAR
  Local szNumber2[100]:CHAR
  Local szLinearRootX[100]:CHAR

  ;Get the handle to Results Static control in Eax
  Invoke GetWindowItem, hWnd, IDC_QUADRATICSOLUTIONS_RESULTS

  ;Save it in Edi
  Mov Edi, Eax

  ;Clear the Results control
  Invoke SetWindowText, Edi, NULL

  ;Clear szbuffer
  Mov szBuffer[0], 0

      Invoke GetWindowText, Edi, Addr szBuffer, 255

  Invoke SetWindowText, Edi, Addr szBuffer

      ;Get the address of last character of szBuffer
      Invoke lstrlen, Addr szBuffer
      Add Eax, Offset szBuffer

  ;Adds a carriage return/line feed to szBuffer
  Invoke lstrcat, Addr szBuffer, Addr szCRLF

;       print chr$(13, 10)
      Invoke lstrcat, Addr szBuffer, TextAddr("Linear Equation : Bx + C")
;       print chr$("Linear Equation : Bx + C ", 13, 10)
  Invoke lstrcat, Addr szBuffer, Addr szCRLF
;       print chr$(13, 10)
      Invoke lstrcat, Addr szBuffer, TextAddr("The linear equation : ")
;       print chr$(" Solution for linear Equation : ", 13, 10)
      Invoke lstrcat, Addr szBuffer, TextAddr("---------------------------")
;       print chr$("-------------------------------", 13, 10)
      Invoke lstrcat, Addr szBuffer, TextAddr(" ")
;       print chr$(" ")
      Invoke FpuFLtoA, Addr NumberB, 15, Addr szNumber1, SRC1_REAL
      ;Get the address of last character of szBuffer
      Invoke lstrlen, Addr szBuffer
      Add Eax, Offset szBuffer
  ;Convert the Esi value to a decimal
  ;string and adds it to szBuffer
      Invoke String, Addr szNumber1, Eax, ecDecimal

;       print ext$ (NumberB, 0, 4)  ; display the X coefficient of linear equation
                                   ; to 4 decimal places
      Invoke FpuComp, Addr NumberC, Offset Number0, SRC1_REAL Or SRC2_REAL
      Shr Al, 1                  ; mov bit 0 to Carry Flag , NumberC = 0
      Jc NumberCIs0              ; jump on Carry Flag
      Invoke lstrcat, Addr szBuffer, TextAddr(" X + ")
;       print chr$(" X + ")
      Invoke FpuFLtoA, Addr NumberC, 15, Addr szNumber2, SRC1_REAL
      ;Get the address of last character of szBuffer
      Invoke lstrlen, Addr szBuffer
      Add Eax, Offset szBuffer
  ;Convert the Esi value to a decimal
  ;string and adds it to szBuffer
      Invoke String, Addr szNumber2, Eax, ecDecimal

;       print ext$ (NumberC, 0, 4) ; display the constant of linear equation to
                                  ; to 4 decimal places
       Jmp Next      ; just jump

NumberCIs0:
      Invoke lstrcat, Addr szBuffer, TextAddr(" X ")
;    print chr$(" X ")
Next:
     Invoke lstrcat, Addr szBuffer, TextAddr(" = 0 ")
     Invoke lstrcat, Addr szBuffer, Addr szCRLF
     Invoke lstrcat, Addr szBuffer, Addr szCRLF
;    print chr$(" = 0 ", 13, 10, 13, 10)

     Invoke lstrcat, Addr szBuffer, TextAddr(" X = ")
;       print chr$(" X = ")
     Invoke FpuFLtoA, Addr _LinearRootX, 15, Addr szLinearRootX, SRC1_REAL
     ;Get the address of last character of szBuffer
     Invoke lstrlen, Addr szBuffer
     Add Eax, Offset szBuffer
;Convert the Esi value to a decimal
;string and adds it to szBuffer
     Invoke String, Addr szLinearRootX, Eax, ecDecimal
                               
     Invoke lstrcat, Addr szBuffer, Addr szCRLF
   
;       print real10$ (_LinearRootX)
     Invoke lstrcat, Addr szBuffer, Addr szCRLF
;       print chr$(13, 10, 13, 10)
       ;print chr$(13, 10)
Ret
printLinearFormat EndP


[Ramon Sala]

Egan,

I do not have much time to be fixing your bugs. You have to be able to find them and fix them if you want to program in assembly.

Anyway, if you attach the whole project, I'll try to find all bugs.

Ramon

[etow]

Hi Ramon,

Well I am trying my best to find the bugs myself and fixing them.  It is just when Easy Code says
Exception address then I do not know where to find the bugs without mentioning the line numbers.

Here is my full program in attachment.

Thanks

[attachment deleted by admin]

[Ramon Sala]

Egan,

Please why don't you read the parameters for FpuAtoFL before trying to use it? Here is the error (shown in red color):

    ;Get the handle to Solve button in Eax
    Invoke GetWindowItem, hWnd, IDC_QUADRATICSOLUTIONS_GETA
    ;Save it in Edx
    Mov Edx, Eax
    ;Get the text in the Edit control
    Invoke GetWindowText, Edx, Addr szNumber1, 24
    ;Convert it to a number returned in Eax
    Invoke Value, Addr szNumber1
    Invoke FpuAtoFL, Eax, Addr NumberA, DEST_FPU


The first parameter for the FpuAtoFL function must be the address to a buffer, not a numerical value. Try to replace the first parameter (Eax) with a buffer containing a real number.


Ramon

[etow]

Hi

I corrected the error but I do not get any output from my program.
I have included the edited program in my attachment.

[attachment deleted by admin]

[etow]

Does any one have the time to look at my code in the email attachment?