I have a problem setting an image to static window.
Here is a part of my code:
HBITMAP bitmap = (HBITMAP)LoadImage(NULL, "Tetris/Tetrominoes/T One.bmp", IMAGE_BITMAP, 20, 20, LR_LOADFROMFILE);
one = CreateWindow("Static", NULL, WS_CHILD | WS_VISIBLE | SS_BITMAP, (x-10), ((y-y)+50), 20, 20, hMain, NULL,NULL,NULL);
SendMessage(one, STM_SETIMAGE, IMAGE_BITMAP, (LPARAM)bitmap);
BringWindowToTop(one);
The thing I don't understand is why it isn't loading since I used this type of code before for different purpose. According to all sources this part of code should work fine but my image is not showing. if I remove the SendMessage() function my window is visible but without image and when I put SendMessage() the window just disappears. I tried chaging the image size window size and still nothing.
Thanks in advance!
Related
I have a Direct2D program, and my goal is to have a Win32 button rendered with the Direct2D window.
I was able to compile the program fine, but the problem is that the button only shows when I click on it. Once I click outside of the button, it just goes invisible. It's even invisible when I open the application. What I expect is for the button to be visible all the time. I'm not necessarily worried about if it renders above or below the Direct2D renderer.
When I click on it:
When I click outside the button (just blank):
Here is my render function:
create_drs(); // Creates device resources
m_pRenderTarget->BeginDraw();
m_pRenderTarget->Clear(D2D1::ColorF(bg.r / 255, bg.g / 255, bg.b / 255, 1));
HWND hwndButton = CreateWindow(
L"BUTTON",
L"a button",
WS_TABSTOP | WS_VISIBLE | WS_CHILD | BS_DEFPUSHBUTTON,
0,
0,
150,
150,
m_hwnd,
NULL,
(HINSTANCE)GetWindowLongPtr(m_hwnd, GWLP_HINSTANCE),
NULL);
m_pRenderTarget->EndDraw();
I've tried taking out the Clear function, but it's still invisible when the application opens, but stays visible forever once I click on it. I also tried looking online, but couldn't find a sufficient solution for this specific problem.
I would like to draw my program's icon on an "owner-drawn" button. This could be either an icon in the resource file, or the generic Windows icon. But, even after endless searching, I have not been able to find the code for this. I have come across bits and pieces of answers. But, no complete explanations.
Sorry that I have no code to post. I am totally lost on this one. Either standard Win API or GDI+ will work for me.
When you create the button, add BS_ICON style, then get the handle to your icon, you can use LoadImage.
Finally send BM_SETIMAGE message with the handle to your icon.
Here is the code sample:
HWND button1 = CreateWindow(TEXT("Button"), TEXT("OK"), WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON | BS_ICON,
50, 50, 50, 50, hwnd, (HMENU)1001, hInstance, NULL);
HICON hIcon = (HICON)LoadImage( // returns a HANDLE so we have to cast to HICON
NULL, // hInstance must be NULL when loading from a file
L"iconname.ico", // the icon file name
IMAGE_ICON, // specifies that the file is an icon
0, // width of the image (we'll specify default later on)
0, // height of the image
LR_LOADFROMFILE | // we want to load a file (as opposed to a resource)
LR_DEFAULTSIZE | // default metrics based on the type (IMAGE_ICON, 32x32)
LR_SHARED // let the system release the handle when it's no longer used
);
SendMessage(button1, BM_SETIMAGE, IMAGE_ICON, (LPARAM)hIcon);
I'm trying to create transparency in my application.
For instance the window of my app is square and i want to make it round, by hiding parts of the window.
My code looks something like this:
HDC hdcMask = nullptr;
HBITMAP hBMP = (HBITMAP)LoadImageW(nullptr, L"C:\\mask.bmp", IMAGE_BITMAP, 150, 160, LR_LOADFROMFILE);
SelectObject(hdcMask, hBMP);
HWND hWnd = GetActiveWindow();
HDC hdcWindow = GetDC(hWnd);
TransparentBlt(hdcWindow, 0, 0, 150, 160, hdcWindow, 0, 0, 150, 160, RGB(0,0,0));
where mask.bmp is a bitmap where white is what i want to be transparent and black is what I want to be visible.
After applying this code, nothings happens. What am I doing wrong ? Is there another method to obtain the desired result?
Note: I need this code to work on Windows XP OS or later.
There are several ways of making a window transparent and/or translucent.
SetWindowRgn will make parts of a window transparent.
SetLayeredWindowAttributes can make parts of a window transparent, and can also apply translucency to the whole of the rest of the window.
UpdateLayeredWindow can give individual windows different amounts of translucency.
Why don't you use a different format than bmp where you can also include alpha data?
You can use a PixelFormat32bppPARGB Bitmap, use Bitmap::LockBits an Bitmap::Unlockbits
to keep the file's format and avoid having the alpha setting overwritten.
I am making a small game with bitmaps representing objects and I am trying to mask the background using a bitmap mask. I looked it up on google and made two bitmaps. One of the ship and one as a mask. For the mask, I colored everything I wanted visible black and the background white. (If this should have been opposite, please let me know). I load the bitmaps as so:
HBITMAP bmpShip = (HBITMAP)LoadImage(NULL,
"C:\\Users\\Owner\\Desktop\\Asteroids\\Starship.bmp",
IMAGE_BITMAP,
0,
0,
LR_LOADFROMFILE);
HBITMAP hShipMask = (HBITMAP)LoadImage(NULL,
"C:\\Users\\Owner\\Desktop\\Asteroids\\StarshipMask.bmp",
IMAGE_BITMAP,
0,
0,
LR_LOADFROMFILE);
Now how can I use the BitBlt raster operations to display a bitmap without the background on the screen at a specific location. Without masking the background, this is what I have been doing:
Ship = CreateWindowEx(0,
"STATIC","",
SS_CENTERIMAGE | SS_REALSIZEIMAGE | SS_BITMAP | WS_CHILD | WS_VISIBLE,
10,
shipPos,
294,
86,
Background,
(HMENU)-1,
NULL, NULL);
SendMessage(Ship, STM_SETIMAGE, (WPARAM)IMAGE_BITMAP, (LPARAM)bmpShip);
UpdateWindow(hWnd);
//And moving the window with MoveWindow()
Can anyone please tell me how I can mask the background and then move the window to a new location
Edit: By the way, Background is just another bitmap loaded in the same way as the others which the ship is displayed on top of.
I have problems with creating a simple Group-Box-Control via CreateWindowEx. The font-size/-style of its caption just doesn’t look right.
I have created a simple Windows Dialog (containing group-boxes, buttons…) with the Visual Studio - Resource Manager. When I load that dialog with DialogBox(…) everything looks normal but when I create another group-box-control on that same dialog via CreateWindowEx(…) the caption of the new control has a different font-size/-style.
With Microsoft Spy++ I was able to see the dwExStyle and dwStyle values of the other groub-boxes, but even when I use the same values in CreateWindowEx I still get a different look.
Here is the code I use to create the new group-box:
HWND hGroup1 = GetDlgItem(_hWnd, IDC_GROUPBOX1);
HWND hGroup2 = CreateWindowEx(
WS_EX_LEFT | WS_EX_LTRREADING | WS_EX_RIGHTSCROLLBAR | WS_EX_NOPARENTNOTIFY,
L"Button",
L"Hallo",
WS_CHILDWINDOW | WS_VISIBLE | BS_GROUPBOX,
20, 20, 250, 250,
hGroup1,
nullptr,
_hInstance,
nullptr);
Here is a screen capture of the dialog:
http://imageshack.us/photo/my-images/856/groupboxfontissue.png/
Please let me know where I went wrong and what I can do to fix it.
[EDIT-1]
In regards to Jonathan Potter and Superman, as you suggested I set the font-handle of the new group-box to the same as for the other controls.
HFONT hFont1 = (HFONT)SendMessage(hGroup1, WM_GETFONT, 0, 0);
HFONT hFont2 = (HFONT)SendMessage(hGroup2, WM_GETFONT, 0, 0);
HFONT hFont3 = (HFONT)SendMessage(_hWnd, WM_GETFONT, 0, 0);
SendMessage(hGroup2, WM_SETFONT, (WPARAM)hFont1, TRUE);
hFont2 = (HFONT)SendMessage(hGroup2, WM_GETFONT, 0, 0);
At the end of this code, I can see that all controls and the dialog window have the same font-handle but only the controls which were created with the Resource Manager have the correct font (which is the system font).
Is there anything else I can do???
[EDIT-2]
I cannot believe it… it works now! Thank you all very much for your help!
I just had to set the hWndParent value in CreateWindowEx(…) to the dialog handle and then use WM_GETFONT and WM_SETFONT to copy the right font.
I wish you all a nice weekend.
Controls you create manually (via CreateWindowEx) do not get their font set automatically, and will default to the "system font" (which is what you see in your screenshot). Instead, you need to set the control's font once it has been created. For example,
SendMessage(hGroup2, WM_SETFONT, (WPARAM)SendMessage(hGroup1, WM_GETFONT, 0, 0), TRUE);
When you place a control in a dialog using the resource editor, the font set to the dialog, which is the parent of the control will be used for it by default.
If you're creating a control dynamically, the system font will be used instead of the font of the dialog.
To get the same font of the dialog for a control that you create dynamically, set the font of the dialog to the control in the WM_INITDIALOG handler.
In the code snippet below, replace m_hWnd with the handle of the parent dialog.
HFONT font = (HFONT)::SendMessage(m_hWnd, WM_GETFONT, 0, 0);
::SendMessage(hGroup2, WM_SETFONT, (WPARAM)font, TRUE);