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Bizarro
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 Posted: Fri Apr 04, 2008 2:32 pm Post subject: [help] few question regarding to c++ dialog |
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HI
with the help of wiccan's c++ dialog tut. i recently finished my first c++ DLL with a dialog as a substitute for real GUI.
i have 2 questions about the dialogs. hopefully some pros in c++ can help me out 
1) i was wondering if anyone know anyway to change the color of the dialog and even add a pic/ico somewhere. it would be really great to make it look more userfriendly.
2) if i want to get a user input by adding an edit control in the dialog, how do i retreive its input as a string.
here is the main structure for the dialog.
| Code: |
BOOL CALLBACK DlgProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
{
UNREFERENCED_PARAMETER( lParam );
switch( uMsg )
{
case WM_INITDIALOG:
//this is the first message called to the dialog when it is being created
ShowWindow( hWnd, SW_SHOW );
return TRUE;
case WM_COMMAND:
//this will handle the command buttons that are part of the dialog
...
case WM_QUIT:
case WM_DESTROY:
EndDialog( hWnd, 0 );
return TRUE;
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it would be really great if you can explain in some detail, kinda new to c++ and dialog making:(
thank you
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hcavolsdsadgadsg
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Posts: 5801
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| Posted: Fri Apr 04, 2008 4:36 pm Post subject: |
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| Edit the resource, non express versions of Visual Studio come with a resource editor, or you can just use one of the 21398123 free ones floating around.
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lurc
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| Posted: Fri Apr 04, 2008 7:51 pm Post subject: |
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| Quote: |
2) if i want to get a user input by adding an edit control in the dialog, how do i retreive its input as a string. |
GetDlgItemText - Search MSDN
I'll try to look up about #1
It involves redrawing your app.
But for the Icon.
1. Create an Icon in resource.
2. Use LoadIcon
For Pic.
Try Picture Control.
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Bizarro
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| Posted: Sat Apr 05, 2008 1:34 am Post subject: |
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| lurc wrote: | | Quote: |
2) if i want to get a user input by adding an edit control in the dialog, how do i retreive its input as a string. |
GetDlgItemText - Search MSDN
I'll try to look up about #1
It involves redrawing your app.
But for the Icon.
1. Create an Icon in resource.
2. Use LoadIcon
For Pic.
Try Picture Control. |
tx i will test them out
for picture control, i can't seem to put a picture there somehow o_o
btw im using VS 2008 pro.
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Last edited by Bizarro on Tue Feb 01, 2011 11:58 am; edited 1 time in total |
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killersamurai
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| Posted: Sat Apr 05, 2008 6:33 am Post subject: |
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You would need to process the WM_PAINT message to draw a picture in the background.
| Code: |
LRESULT CALLBACK DlgProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
static int width, height;
static HBITMAP hPic;
HDC hDc, hCompat;
PAINTSTRUCT ps;
switch (Msg)
{
case WM_INITDIALOG:
{
hPic = LoadBitmap((HINSTANCE)GetWindowLong(hWnd, GWL_HINSTANCE), MAKEINTRESOURCE(IDB_BITMAP1));
RECT rect;
GetWindowRect(hWnd, &rect);
width = rect.right;
height = rect.bottom;
SetFocus(hWnd);
}
return true;
case WM_PAINT:
{
hDc = BeginPaint(hWnd, &ps);
hCompat = CreateCompatibleDC(hDc);
SelectObject(hCompat, hPic);
StretchBlt(hDc, 0, 0, width, height, hCompat, 0, 0, 505, 505, SRCCOPY);
DeleteDC(hCompat);
EndPaint(hWnd, &ps);
}
return true;
case WM_CLOSE:
EndDialog(hWnd, 0);
DeleteObject(hPic);
return true;
case WM_DESTROY:
PostQuitMessage(0);
return true;
}
return false;
}
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This uses a .bmp that is in resource.
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Bizarro
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| Posted: Sat Apr 05, 2008 11:31 am Post subject: |
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great, this comes in handy:P
now all i need is to complete the user input  , then im set
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Last edited by Bizarro on Tue Feb 01, 2011 11:58 am; edited 1 time in total |
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atom0s
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| Posted: Sat Apr 05, 2008 3:28 pm Post subject: |
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You can do the same with changing the background to say, black:
| Code: | void SetupBackground( HWND hWnd )
{
BITMAPINFO canvas = {0};
HBITMAP canvasBMP = NULL;
HDC canvasHDC = NULL;
HGDIOBJ canvasOBJ = NULL;
unsigned char* lpCanvasBuffer;
RECT lpRect = {0};
GetWindowRect( GetDesktopWindow(), &lpRect );
canvas.bmiHeader.biSize = sizeof(canvas.bmiHeader);
canvas.bmiHeader.biWidth = lpRect.left+lpRect.right;
canvas.bmiHeader.biHeight = lpRect.top+lpRect.bottom;
canvas.bmiHeader.biPlanes = 1;
canvas.bmiHeader.biBitCount = 32;
canvasHDC = CreateCompatibleDC( GetWindowDC( hWnd ) );
canvasBMP = CreateDIBSection( canvasHDC, &canvas, DIB_RGB_COLORS, (LPVOID*)&lpCanvasBuffer, NULL, NULL );
canvasOBJ = SelectObject( canvasHDC, canvasBMP );
SetBkColor( canvasHDC, TRANSPARENT );
memset( (void*)lpCanvasBuffer, 0x0, canvas.bmiHeader.biWidth*canvas.bmiHeader.biHeight*4 );
PAINTSTRUCT paintStruct = {0};
HDC hDisplay = BeginPaint( hWnd, &paintStruct );
BitBlt( hDisplay, 0, 0, canvas.bmiHeader.biWidth, canvas.bmiHeader.biHeight, canvasHDC, NULL, NULL, SRCCOPY );
EndPaint( hWnd, &paintStruct );
} |
This was for something I made for someone a bit ago, so change some stuff as needed. (Mostly the sizes and such.)
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Bizarro
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| Posted: Sat Apr 05, 2008 10:35 pm Post subject: |
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cool tx again wiccan.
one more problem. i tried to create an edit control in the dialog to receive user input as a string[] or char[];
but somehow with GetDlgItemText, everytime i click on the edit control, the dialog auto closes. :S
i don't know whats wrong. any suggestions or example i can look up
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Last edited by Bizarro on Tue Feb 01, 2011 11:58 am; edited 1 time in total |
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atom0s
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| Posted: Sun Apr 06, 2008 3:23 am Post subject: |
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| Bizarro wrote: | cool tx again wiccan.
one more problem. i tried to create an edit control in the dialog to receive user input as a string[] or char[];
but somehow with GetDlgItemText, everytime i click on the edit control, the dialog auto closes. :S
i don't know whats wrong. any suggestions or example i can look up |
Sounds like your dialog callback has a messed up case that is not breaking or returning correctly and is 'bleeding' into another case. Check your command cases and be sure that they are all closed correctly.
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