Hello !How can I change the size of a window?
or the right API ?
Hi,
EDIT: Ignore me - link was totally irrelevent to resizing windows.
Best regards,
Astro.
Look at the MoveWindow function. It allow you to move the window, or change its dimensions, or both.
You can also have a look at the API SetWindowPos() which has ore options but note that the MoveWindow() API that Ray has mentioned is faster.
.code
SetWindowDim proc hWnd:DWORD, dwWidth:DWORD, dwHeight:DWORD
push eax
push edx
push 01Ch
push 040h
call GlobalAlloc
push hWnd
pop dword ptr [eax]
mov dword ptr [eax+24], 00000000Ah
push eax
push eax
push 0h
push 46h
push hWnd
call SendMessage
xor eax, eax
mov eax, dwHeight
shl eax, 16
mov edx, dwWidth
or eax, edx
xchg eax, edx
pop eax
push dwWidth
pop dword ptr [eax+16]
push dwHeight
pop dword ptr [eax+20]
push eax
push edx
push 0h
push 5h
push hWnd
call SendMessage
push 0h
push 9h
push hWnd
call SendMessage
pop edx
pop eax
ret
SetWindowDim endp
Can be used as:
invoke SetWindowDim, hWnd, 400, 600
This procedure resizes the specified window so the client area will have the specified width and height. I coded this for dialogs (for which the size is specified in Dialog Template Units instead of pixels) where I needed a specific client size in pixels. There are other methods of doing this, but AFAIK none of them can be depended on to set the width and height to the exact specified values under all versions of Windows. And for application windows, sizing the window for a specific client size when it is created is cumbersome, at best, because you must allow for the title bar and borders.
SetClientSize proc uses ebx hwnd:HWND, pixelWidth:DWORD, pixelHeight:DWORD
LOCAL rcc:RECT, rcw:RECT
invoke GetClientRect, hwnd, ADDR rcc
invoke GetWindowRect, hwnd, ADDR rcw
mov ecx, rcw.right
sub ecx, rcw.left ; ecx = window width - 1
mov eax, pixelWidth
dec eax ; eax = pixelWidth - 1
mov ebx, rcc.right ; ebx = client width - 1
sub ebx, eax ; ebx = difference
sub ecx, ebx ; adjust width
mov edx, rcw.bottom
sub edx, rcw.top ; edx = window height - 1
mov eax, pixelHeight
dec eax ; eax = pixelHeight - 1
mov ebx, rcc.bottom ; ebx = client height - 1
sub ebx, eax ; ebx = difference
sub edx, ebx ; adjust height
invoke MoveWindow, hwnd, rcw.left, rcw.top, ecx, edx, TRUE
ret
SetClientSize endp
Quote from: hutch-- on September 11, 2009, 02:45:57 AM
You can also have a look at the API SetWindowPos() which has ore options but note that the MoveWindow() API that Ray has mentioned is faster.
Thank you ! hutch,both of these two API I have tried ,however ,they can only make the window smaller,after I checked the function of them,I can't resizing the window bigger,the code below:
.elseif wParam==98
invoke GetClientRect,hWinMain,addr @stRect
mov eax,@stRect.right
add eax,10
mov @stRect.right,eax
invoke SetWindowPos,hWinMain,HWND_NOTOPMOST,@stRect.left,@stRect.left,@stRect.right,@stRect.right,NULL
;or invoke MoveWindow,hWinMain,,@stRect.left,,@stRect.left,,@stRect.right,,@stRect.right,true;I have tried ,both the some result(to be smaller,rather than bigger)
what's wrong?
ah,Thanks all of you !
I have solved this matter, by the way,what's the differences between GetWindowRect() and GetClientRect(),when i try the first one today, it works ,my window changed to be bigger.Wow,it's really wonderful !
The WindowRect is the size of your entire window. Its maximum size is the size of your screen resolution. The ClientRect is the area of the WindowRect (usually the white space within your window) which does not have whatever other areas you may have specified when you created your window such as:
- borders,
- system menu (usually the blue section at the top of your window),
- your own menu,
- horizontal and/or vertical scroll bars,
etc.